196577440 has 48 divisors (see below), whose sum is σ = 466495848. Its totient is φ = 78278656.

The previous prime is 196577429. The next prime is 196577461. The reversal of 196577440 is 44775691.

It can be written as a sum of positive squares in 4 ways, for example, as 129140496 + 67436944 = 11364^2 + 8212^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34644 + ... + 39916.

Almost surely, 2^196577440 is an apocalyptic number.

196577440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 196577440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233247924).

196577440 is an abundant number, since it is smaller than the sum of its proper divisors (269918408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

196577440 is a wasteful number, since it uses less digits than its factorization.

196577440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5521 (or 5513 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 196577440 is about 14020.6076901110. The cubic root of 196577440 is about 581.4484605381.

The spelling of 196577440 in words is "one hundred ninety-six million, five hundred seventy-seven thousand, four hundred forty".